PLEASE HELP on Reaction Engineering.

Question 2 For the elementary reaction: A + 3 8 2.1 Write an expression for the rate of reaction of A. 2.2 What are the units of ra? 2.3 What are the units of the rate constant in your rate equation? 2.4 Express ry in terms of ra 2.5 Express rc in terms of ra Question 3 For the elementary reaction A+B 5C+2D 3.1 Write an expression for the rate of reaction of A. 3.2 What are the units of ra? 3.3 What are the units of the rate constants in your rate equation? 3.4 Express ra in terms of ra 3.5 Express rc in terms of ra. 3.6 Express rc in terms of ro